4.19-stable patches

added patches:
	powerpc-force-inlining-of-cpu_has_feature-to-avoid-build-failure.patch

diff --git a/queue-4.19/powerpc-force-inlining-of-cpu_has_feature-to-avoid-build-failure.patch b/queue-4.19/powerpc-force-inlining-of-cpu_has_feature-to-avoid-build-failure.patch
new file mode 100644 (file)
index 0000000..d8ef066
--- /dev/null
+++ b/queue-4.19/powerpc-force-inlining-of-cpu_has_feature-to-avoid-build-failure.patch
@@ -0,0 +1,58 @@
+From eed5fae00593ab9d261a0c1ffc1bdb786a87a55a Mon Sep 17 00:00:00 2001
+From: Christophe Leroy <christophe.leroy@csgroup.eu>
+Date: Wed, 10 Mar 2021 12:10:34 +0000
+Subject: powerpc: Force inlining of cpu_has_feature() to avoid build failure
+
+From: Christophe Leroy <christophe.leroy@csgroup.eu>
+
+commit eed5fae00593ab9d261a0c1ffc1bdb786a87a55a upstream.
+
+The code relies on constant folding of cpu_has_feature() based
+on possible and always true values as defined per
+CPU_FTRS_ALWAYS and CPU_FTRS_POSSIBLE.
+
+Build failure is encountered with for instance
+book3e_all_defconfig on kisskb in the AMDGPU driver which uses
+cpu_has_feature(CPU_FTR_VSX_COMP) to decide whether calling
+kernel_enable_vsx() or not.
+
+The failure is due to cpu_has_feature() not being inlined with
+that configuration with gcc 4.9.
+
+In the same way as commit acdad8fb4a15 ("powerpc: Force inlining of
+mmu_has_feature to fix build failure"), for inlining of
+cpu_has_feature().
+
+Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
+Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
+Link: https://lore.kernel.org/r/b231dfa040ce4cc37f702f5c3a595fdeabfe0462.1615378209.git.christophe.leroy@csgroup.eu
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ arch/powerpc/include/asm/cpu_has_feature.h | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/arch/powerpc/include/asm/cpu_has_feature.h b/arch/powerpc/include/asm/cpu_has_feature.h
+index 7897d16e0990..727d4b321937 100644
+--- a/arch/powerpc/include/asm/cpu_has_feature.h
++++ b/arch/powerpc/include/asm/cpu_has_feature.h
+@@ -7,7 +7,7 @@
+ #include <linux/bug.h>
+ #include <asm/cputable.h>
+ 
+-static inline bool early_cpu_has_feature(unsigned long feature)
++static __always_inline bool early_cpu_has_feature(unsigned long feature)
+ {
+       return !!((CPU_FTRS_ALWAYS & feature) ||
+                 (CPU_FTRS_POSSIBLE & cur_cpu_spec->cpu_features & feature));
+@@ -46,7 +46,7 @@ static __always_inline bool cpu_has_feature(unsigned long feature)
+       return static_branch_likely(&cpu_feature_keys[i]);
+ }
+ #else
+-static inline bool cpu_has_feature(unsigned long feature)
++static __always_inline bool cpu_has_feature(unsigned long feature)
+ {
+       return early_cpu_has_feature(feature);
+ }
+-- 
+2.31.0
+

diff --git a/queue-4.19/series b/queue-4.19/series
index 2d867bcaa19ed1492cdee87745416af4435cae0d..6bb72daefa36be77ac724377c2e476a74674c610 100644 (file)
--- a/queue-4.19/series
+++ b/queue-4.19/series
@@ -18,3 +18,4 @@ sunrpc-fix-refcount-leak-for-rpc-auth-modules.patch
 net-qrtr-fix-__netdev_alloc_skb-call.patch
 scsi-lpfc-fix-some-error-codes-in-debugfs.patch
 nvme-rdma-fix-possible-hang-when-failing-to-set-io-q.patch
+powerpc-force-inlining-of-cpu_has_feature-to-avoid-build-failure.patch